BPG致力于知识的发现和传播
Total Visits of This Article
2021 | 总访问次数
排名 国家/地区 数量 占比
1 China 241 66.8%
2 United States 44 12.2%
3 Germany 27 7.5%
4 Canada 12 3.3%
5 Netherlands 9 2.5%
6 United Kingdom 8 2.2%
7 Japan 5 1.4%
8 Hong Kong 5 1.4%
9 Saudi Arabia 2 0.6%
10 Taiwan 2 0.6%
11 Ukraine 2 0.6%
12 Luxembourg 2 0.6%
13 India 1 0.3%
14 France 1 0.3%